package com.ming.utils;

import java.util.Random;

/**
 * Created by LIANG on 2018/3/16.
 */
public class KeyUtil {
    public static synchronized String genUniqueKey(){
        Random random = new Random();
        Integer a = random.nextInt(900000)+10000;
        return System.currentTimeMillis()+String.valueOf(a);
    }

}
